Patents Assigned to Kabushiki Kaisha Myanaga
  • DIAMETRICALLY EXPANDED GROOVE CUTTING APPARATUS AND EXPANDABLE MECHANISM
    Publication number: 20090139772
    Abstract: To provide a diametrically expanded groove cutting apparatus capable of simultaneously cutting a plurality of diametrically expanded annular grooves on an inner peripheral wall of an anchor prepared hole for planting an anchor bar therein, and to provide an expandable mechanism used in the diametrically expanded groove cutting apparatus.
    Type: Application
    Filed: November 13, 2006
    Publication date: June 4, 2009
    Applicant: Kabushiki Kaisha Myanaga
    Inventor: Masaaki Miyanaga